Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc6dd848e6f410d4…

MALICIOUS

PDF

12.0 KB
MD5: 4c1417af75b57937a8bdcf4f0b6ef008 SHA-1: 80f5fd424a0e362239ee029021a6e3bede630891 SHA-256: bc6dd848e6f410d4f6ce5c59c6ba25ec2d59f880b00809c62dac1a51e4d6abeb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV with the signature Pdf.Exploit.Dropped-78. Static analysis detected an embedded script payload within a PDF stream and an embedded file object, indicating the PDF is designed to drop and execute a secondary payload. The presence of XFA forms and embedded files are common characteristics of malicious PDFs used for exploitation.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
dac854dff6dbc9e2f7c13c0662c5abae95538115445d4dcda59325eef7c6dbcf
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11563 bytes